本文整理汇总了Golang中github.com/btcsuite/btcd/blockchain.BuildMerkleTreeStore函数的典型用法代码示例。如果您正苦于以下问题:Golang BuildMerkleTreeStore函数的具体用法?Golang BuildMerkleTreeStore怎么用?Golang BuildMerkleTreeStore使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了BuildMerkleTreeStore函数的4个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Golang代码示例。
示例1: createBlock
// createBlock creates a new block building from the previous block.
func createBlock(prevBlock *btcutil.Block, inclusionTxs []*btcutil.Tx,
blockVersion int32, blockTime time.Time,
miningAddr btcutil.Address, net *chaincfg.Params) (*btcutil.Block, error) {
prevHash := prevBlock.Hash()
blockHeight := prevBlock.Height() + 1
// If a target block time was specified, then use that as the header's
// timestamp. Otherwise, add one second to the previous block unless
// it's the genesis block in which case use the current time.
var ts time.Time
switch {
case !blockTime.IsZero():
ts = blockTime
default:
ts = prevBlock.MsgBlock().Header.Timestamp.Add(time.Second)
}
extraNonce := uint64(0)
coinbaseScript, err := standardCoinbaseScript(blockHeight, extraNonce)
if err != nil {
return nil, err
}
coinbaseTx, err := createCoinbaseTx(coinbaseScript, blockHeight,
miningAddr, net)
if err != nil {
return nil, err
}
// Create a new block ready to be solved.
blockTxns := []*btcutil.Tx{coinbaseTx}
if inclusionTxs != nil {
blockTxns = append(blockTxns, inclusionTxs...)
}
merkles := blockchain.BuildMerkleTreeStore(blockTxns)
var block wire.MsgBlock
block.Header = wire.BlockHeader{
Version: blockVersion,
PrevBlock: *prevHash,
MerkleRoot: *merkles[len(merkles)-1],
Timestamp: ts,
Bits: net.PowLimitBits,
}
for _, tx := range blockTxns {
if err := block.AddTransaction(tx.MsgTx()); err != nil {
return nil, err
}
}
found := solveBlock(&block.Header, net.PowLimit)
if !found {
return nil, errors.New("Unable to solve block")
}
utilBlock := btcutil.NewBlock(&block)
utilBlock.SetHeight(blockHeight)
return utilBlock, nil
}
开发者ID:skycoin,项目名称:skycoin-exchange,代码行数:59,代码来源:blockgen.go
示例2: TestMerkle
// TestMerkle tests the BuildMerkleTreeStore API.
func TestMerkle(t *testing.T) {
block := btcutil.NewBlock(&Block100000)
merkles := blockchain.BuildMerkleTreeStore(block.Transactions())
calculatedMerkleRoot := merkles[len(merkles)-1]
wantMerkle := &Block100000.Header.MerkleRoot
if !wantMerkle.IsEqual(calculatedMerkleRoot) {
t.Errorf("BuildMerkleTreeStore: merkle root mismatch - "+
"got %v, want %v", calculatedMerkleRoot, wantMerkle)
}
}
开发者ID:jimmysong,项目名称:btcd,代码行数:11,代码来源:merkle_test.go
示例3: UpdateExtraNonce
// UpdateExtraNonce updates the extra nonce in the coinbase script of the passed
// block by regenerating the coinbase script with the passed value and block
// height. It also recalculates and updates the new merkle root that results
// from changing the coinbase script.
func UpdateExtraNonce(msgBlock *wire.MsgBlock, blockHeight int32, extraNonce uint64) error {
coinbaseScript, err := standardCoinbaseScript(blockHeight, extraNonce)
if err != nil {
return err
}
if len(coinbaseScript) > blockchain.MaxCoinbaseScriptLen {
return fmt.Errorf("coinbase transaction script length "+
"of %d is out of range (min: %d, max: %d)",
len(coinbaseScript), blockchain.MinCoinbaseScriptLen,
blockchain.MaxCoinbaseScriptLen)
}
msgBlock.Transactions[0].TxIn[0].SignatureScript = coinbaseScript
// TODO(davec): A btcutil.Block should use saved in the state to avoid
// recalculating all of the other transaction hashes.
// block.Transactions[0].InvalidateCache()
// Recalculate the merkle root with the updated extra nonce.
block := btcutil.NewBlock(msgBlock)
merkles := blockchain.BuildMerkleTreeStore(block.Transactions())
msgBlock.Header.MerkleRoot = *merkles[len(merkles)-1]
return nil
}
开发者ID:you21979,项目名称:btcd,代码行数:27,代码来源:mining.go
示例4: NewBlockTemplate
//.........这里部分代码省略.........
minrLog.Tracef("Skipping tx %s due to error in "+
"ValidateTransactionScripts: %v", tx.Sha(), err)
logSkippedDeps(tx, deps)
continue
}
// Spend the transaction inputs in the block transaction store
// and add an entry for it to ensure any transactions which
// reference this one have it available as an input and can
// ensure they aren't double spending.
spendTransaction(blockTxStore, tx, nextBlockHeight)
// Add the transaction to the block, increment counters, and
// save the fees and signature operation counts to the block
// template.
blockTxns = append(blockTxns, tx)
blockSize += txSize
blockSigOps += numSigOps
totalFees += prioItem.fee
txFees = append(txFees, prioItem.fee)
txSigOpCounts = append(txSigOpCounts, numSigOps)
minrLog.Tracef("Adding tx %s (priority %.2f, feePerKB %.2f)",
prioItem.tx.Sha(), prioItem.priority, prioItem.feePerKB)
// Add transactions which depend on this one (and also do not
// have any other unsatisified dependencies) to the priority
// queue.
if deps != nil {
for e := deps.Front(); e != nil; e = e.Next() {
// Add the transaction to the priority queue if
// there are no more dependencies after this
// one.
item := e.Value.(*txPrioItem)
delete(item.dependsOn, *tx.Sha())
if len(item.dependsOn) == 0 {
heap.Push(priorityQueue, item)
}
}
}
}
// Now that the actual transactions have been selected, update the
// block size for the real transaction count and coinbase value with
// the total fees accordingly.
blockSize -= wire.MaxVarIntPayload -
uint32(wire.VarIntSerializeSize(uint64(len(blockTxns))))
coinbaseTx.MsgTx().TxOut[0].Value += totalFees
txFees[0] = -totalFees
// Calculate the required difficulty for the block. The timestamp
// is potentially adjusted to ensure it comes after the median time of
// the last several blocks per the chain consensus rules.
ts, err := medianAdjustedTime(chainState, timeSource)
if err != nil {
return nil, err
}
requiredDifficulty, err := blockManager.CalcNextRequiredDifficulty(ts)
if err != nil {
return nil, err
}
// Create a new block ready to be solved.
merkles := blockchain.BuildMerkleTreeStore(blockTxns)
var msgBlock wire.MsgBlock
msgBlock.Header = wire.BlockHeader{
Version: generatedBlockVersion,
PrevBlock: *prevHash,
MerkleRoot: *merkles[len(merkles)-1],
Timestamp: ts,
Bits: requiredDifficulty,
}
for _, tx := range blockTxns {
if err := msgBlock.AddTransaction(tx.MsgTx()); err != nil {
return nil, err
}
}
// Finally, perform a full check on the created block against the chain
// consensus rules to ensure it properly connects to the current best
// chain with no issues.
block := btcutil.NewBlock(&msgBlock)
block.SetHeight(nextBlockHeight)
if err := blockManager.CheckConnectBlock(block); err != nil {
return nil, err
}
minrLog.Debugf("Created new block template (%d transactions, %d in "+
"fees, %d signature operations, %d bytes, target difficulty "+
"%064x)", len(msgBlock.Transactions), totalFees, blockSigOps,
blockSize, blockchain.CompactToBig(msgBlock.Header.Bits))
return &BlockTemplate{
block: &msgBlock,
fees: txFees,
sigOpCounts: txSigOpCounts,
height: nextBlockHeight,
validPayAddress: payToAddress != nil,
}, nil
}
开发者ID:you21979,项目名称:btcd,代码行数:101,代码来源:mining.go
注:本文中的github.com/btcsuite/btcd/blockchain.BuildMerkleTreeStore函数示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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